/Engine/Plugins/Editor/ContentBrowser/ContentBrowserAliasDataSoure/Source/ContentBrowserAliasDataSource/Public/ContentBrowserAliasDataSource.h
Add an alias for a given asset. bInIsFromMetaData should only be true if the alias came from the AliasTagName metadata.
void AddAlias ( const [FAssetData](API\Runtime\CoreUObject\AssetRegistry\FAssetData) & Asset, const [FName](API\Runtime\Core\UObject\FName) Alias, const bool bInIsFromMetaData, const bool bSkipPrimaryAssetValidation )